EP3812155A1 - Système d'impression par sérigraphie rotative comprenant un cylindre d'impression sérigraphique pourvu d'éléments de surface flexibles - Google Patents

Système d'impression par sérigraphie rotative comprenant un cylindre d'impression sérigraphique pourvu d'éléments de surface flexibles Download PDF

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Publication number
EP3812155A1
EP3812155A1 EP20200439.6A EP20200439A EP3812155A1 EP 3812155 A1 EP3812155 A1 EP 3812155A1 EP 20200439 A EP20200439 A EP 20200439A EP 3812155 A1 EP3812155 A1 EP 3812155A1
Authority
EP
European Patent Office
Prior art keywords
screen printing
cylinder
surface elements
printing cylinder
flexible surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20200439.6A
Other languages
German (de)
English (en)
Inventor
Heinz Brocker
Roland Greutmann
Hans-Rudolf Frick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gallus Ferd Rueesch AG
Original Assignee
Gallus Ferd Rueesch AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gallus Ferd Rueesch AG filed Critical Gallus Ferd Rueesch AG
Publication of EP3812155A1 publication Critical patent/EP3812155A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0804—Machines for printing sheets
    • B41F15/0809—Machines for printing sheets with cylindrical or belt-like screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/38—Screens, Frames; Holders therefor curved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/085—Cylinders with means for preventing or damping vibrations or shocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers

Definitions

  • the present invention relates to a printing system for rotary screen printing, comprising a screen printing cylinder with flexible surface elements, a printing machine for rotary screen printing, including such a printing system, a screen printing cylinder with flexible surface elements, a method for producing such a screen printing cylinder and the use of such a screen printing cylinder in a rotary screen printing process .
  • rotary screen printing a screen printing cylinder usually cooperates with an impression cylinder to form a printing nip.
  • the printing medium for example printing ink
  • Many different substrates can be printed in rotary screen printing, for example textiles, wallpaper, paper, cardboard and foils.
  • Rotary screen printing is used, on the one hand, for continuous printing, in which the material to be printed is transported from roll to roll. An important application of continuous rotary screen printing is the printing of labels.
  • rotary screen printing is also used in sheet-fed printing machines in which the material to be printed on is not fed continuously from roll to roll, but in the form of individual sheets to be printed.
  • the impression cylinder In rotary screen printing on sheet-fed printing machines, the impression cylinder usually has a gripping system with one or more sheet grippers, which takes the individual sheets with it and guides them past the screen printing cylinder.
  • a gripping system with one or more sheet grippers, which takes the individual sheets with it and guides them past the screen printing cylinder.
  • different solutions have been proposed in the prior art.
  • it is known to periodically move the screen printing cylinder together with the squeegee, i.e. to increase the distance to the impression cylinder in order to make room for the to create sublime gripping system.
  • the EP 0 723 864 A1 describes a rotary screen printing machine for sheet printing with an impression cylinder which has a cylinder pit in which the sheet gripper is sunk.
  • the WO 99/48690 describes a rotary screen printing process for printing sheets, in which the sheets are guided through the coating section by means of grippers.
  • the WO 01/54907 A1 describes a sheet-fed printing machine with two screen printing cylinders for printing both sides of a printing material, at least one of the screen printing cylinders having a holding device for the sheet-like printing material and at least one of the screen printing cylinders having an indentation on its peripheral surface as a counterpart to the holding device.
  • the prior art solutions are associated with disadvantages.
  • the regular engagement and disengagement of the screen printing cylinder and squeegee must be precisely matched to the screen printing cylinder, squeegee and impression cylinder.
  • the simultaneous engagement and disengagement of the screen printing cylinder and squeegee is technically and mechanically demanding, can limit the printing speed and make the components involved more maintenance-free.
  • the lowering of the gripping system in the impression cylinder places increased demands on the gripper mechanics, so that the comparatively robust and inexpensive grippers used in raised gripping systems often cannot be used.
  • An undesirable effect of recessed gripping systems is increased folding of the guided sheet. This can lead to problems when transferring the sheet to the next driver roller and when stacking the finished printed sheets.
  • the object of the present invention is to provide a printing system comprising screen printing cylinders and impression cylinders with a raised gripping system for rotary screen printing of sheet-like printing materials, which has the disadvantages of the prior art avoids.
  • the printing system should be compatible with conventional impression cylinders with a raised gripping system and not require frequent engagement and disengagement of the screen printing cylinder. Heavy folding of the guided sheet should be avoided.
  • the screen printing cylinder in a printing system comprising screen printing cylinders and impression cylinders with a raised sheet gripping system does not need to be disengaged before contact with the raised sheet gripping system of the impression cylinder when the contact points of the screen printing cylinder with the sheet gripping system of the impression cylinder with an elastic and / or resilient surface element provides.
  • the printing system according to the invention makes it possible to use conventional impression cylinders with a raised gripping system and places lower demands on the control and mechanics of the cylinders. Frequent engagement and disengagement of the screen printing cylinder is avoided. Wear and maintenance of the components involved are reduced. There is no unwanted folding of the guided sheet during transport through the printing nip. Printed products of high optical quality are obtained.
  • the present invention relates to a printing system for rotary screen printing, comprising a screen printing cylinder and an impression cylinder cooperating with the screen printing cylinder, which has one or more surface elements protruding from its cylinder jacket, the screen printing cylinder having one or more flexible surface elements on its cylinder jacket, which with the one or a plurality of surface elements protruding from the cylinder jacket of the impression cylinder interact.
  • the one or more surface elements protruding from the cylinder jacket of the impression cylinder are one or more sheet grippers.
  • the one or more flexible surface elements of the screen printing cylinder in the printing system according to the invention are designed to be elastic and / or resilient.
  • a "flexible surface element” is understood to mean, in particular, a surface element that can be brought from its original shape into an expanded shape when the force is exerted by an element protruding from the cylinder jacket of the impression cylinder and, when the force is exerted, is restored from this expanded shape returns to its original shape.
  • the one or more resilient surface elements are preferably designed to be elastic and / or resilient. In a particularly preferred embodiment, the one or more surface elements are designed to be elastic.
  • the flexible surface element is designed to be elastic, it comprises at least one elastic material, preferably one or more plastics, particularly preferably one or more elastomers. Vulcanized natural and synthetic rubbers are very particularly preferred, especially rubber. If the flexible surface element is designed to be resilient, it preferably comprises one or more flat springs.
  • the present invention also relates to a screen printing cylinder which can advantageously be used in the printing system according to the invention.
  • the present invention also relates to a screen printing cylinder for rotary screen printing, which comprises one or more flexible surface elements on its cylinder jacket.
  • the one or more flexible surface elements of the screen printing cylinder according to the invention are designed to be elastic and / or resilient.
  • Preferred materials for the resilient surface elements are those mentioned above as being preferred.
  • the one or more flexible surface elements of the screen printing cylinder according to the invention are designed as elliptical patches, particularly preferably as circular patches.
  • the screen printing cylinder according to the invention comprises a plurality of flexible surface elements which are arranged in a row parallel to the cylinder axis of the screen printing cylinder.
  • the screen printing cylinder preferably comprises 2, 3, 4, 5 or 6 flexible surface elements, particularly preferably 3, 4 or 5 flexible surface elements.
  • the screen printing cylinder material provided in step a) is usually an already imaged screen printing cylinder material.
  • the production of the openings in step b) can also take place in a screen printing cylinder material that has not yet been illustrated, with the imaging of the screen printing cylinder material then usually before or after step c), namely after steps a) and optionally b) and before step c ) or after step c) and before step d).
  • the imaging can be carried out according to methods known in principle from the prior art and generally comprises the steps of exposure, washing out and drying.
  • Suitable screen printing cylinder materials are, for example, under the brand name Screeny® from Gallus Ferd. Kniesch AG, St. Gallen, Switzerland, commercially available.
  • step b) can be produced by methods known in principle to the person skilled in the art, for example by punching, laser cutting or mechanical cutting.
  • the flexible material can be fastened in step c) by methods known in principle, for example by gluing.
  • the fixing of the arch-shaped screen printing cylinder material in cylindrical form in step d) can take place according to methods known in principle to the person skilled in the art, for example with the aid of a welding device.
  • the present invention also relates to a printing machine for rotary screen printing, comprising one or more printing systems according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
EP20200439.6A 2019-10-25 2020-10-07 Système d'impression par sérigraphie rotative comprenant un cylindre d'impression sérigraphique pourvu d'éléments de surface flexibles Pending EP3812155A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019216458.7A DE102019216458A1 (de) 2019-10-25 2019-10-25 Drucksystem für den Rotationssiebdruck, umfassend einen Siebdruckzylinder mit nachgiebigen Oberflächenelementen

Publications (1)

Publication Number Publication Date
EP3812155A1 true EP3812155A1 (fr) 2021-04-28

Family

ID=72801312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20200439.6A Pending EP3812155A1 (fr) 2019-10-25 2020-10-07 Système d'impression par sérigraphie rotative comprenant un cylindre d'impression sérigraphique pourvu d'éléments de surface flexibles

Country Status (5)

Country Link
US (2) US11559978B2 (fr)
EP (1) EP3812155A1 (fr)
JP (1) JP2021066180A (fr)
CN (1) CN112706506B (fr)
DE (1) DE102019216458A1 (fr)

Citations (9)

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Publication number Priority date Publication date Assignee Title
DE2324330A1 (de) * 1973-05-14 1974-12-05 Elmar Dr Messerschmitt Verfahren zum gleichmaessigen spannen eines siebgewebes
EP0711660A1 (fr) * 1994-11-08 1996-05-15 Gallus Ferd. Rüesch Ag Support pour écran sérigraphique
EP0723864A1 (fr) 1995-01-24 1996-07-31 De La Rue Giori S.A. Machine rotative de sérigraphie pour l'impression de feuilles
WO1997029912A1 (fr) * 1996-02-19 1997-08-21 De La Rue Giori S.A. Cylindre d'impression d'une machine a feuilles
EP0816072A1 (fr) * 1996-06-28 1998-01-07 Serigrafica Tosi S.r.l. Procédé pour la réalisation de stencils pour l'impression sérigraphique rotative
WO1999048690A1 (fr) 1998-03-24 1999-09-30 Steinemann Ag Procede et dispositif pour le recouvrement de feuilles, et mise en oeuvre du procede
DE20018616U1 (de) * 2000-10-31 2001-02-15 Rehorik, Michael, 73666 Baltmannsweiler Gebogenes Sieb für Siebdruck
WO2001054907A1 (fr) 2000-01-25 2001-08-02 Koenig & Bauer Aktiengesellschaft Machine a imprimer sur feuilles dotee d'un cylindre serigraphique
DE102009017686A1 (de) * 2009-04-16 2010-10-28 Steinemann Technology Ag Siebdruckmaschine mit Greifertransport

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DE3532003A1 (de) * 1985-09-07 1987-03-19 Roland Man Druckmasch Spannvorrichtung zum wahlweisen befestigen eines gummituches oder einer druckplatte
JP2876210B2 (ja) * 1988-02-09 1999-03-31 理想科学工業株式会社 輪転式孔版印刷装置
JP3267334B2 (ja) * 1992-07-30 2002-03-18 理想科学工業株式会社 孔版転写印刷方法及び孔版転写印刷装置
JPH082083A (ja) * 1994-06-20 1996-01-09 Riso Kagaku Corp 孔版印刷用版胴
US5878660A (en) * 1994-08-08 1999-03-09 Riso Kagaku Corporation Stencil printing drum with friction reducing means
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EP1445098A1 (fr) * 2003-02-04 2004-08-11 Kba-Giori S.A. Cylindre porte-blanchet pour une machine d'impression en creux
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Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2324330A1 (de) * 1973-05-14 1974-12-05 Elmar Dr Messerschmitt Verfahren zum gleichmaessigen spannen eines siebgewebes
EP0711660A1 (fr) * 1994-11-08 1996-05-15 Gallus Ferd. Rüesch Ag Support pour écran sérigraphique
EP0723864A1 (fr) 1995-01-24 1996-07-31 De La Rue Giori S.A. Machine rotative de sérigraphie pour l'impression de feuilles
WO1997029912A1 (fr) * 1996-02-19 1997-08-21 De La Rue Giori S.A. Cylindre d'impression d'une machine a feuilles
EP0816072A1 (fr) * 1996-06-28 1998-01-07 Serigrafica Tosi S.r.l. Procédé pour la réalisation de stencils pour l'impression sérigraphique rotative
WO1999048690A1 (fr) 1998-03-24 1999-09-30 Steinemann Ag Procede et dispositif pour le recouvrement de feuilles, et mise en oeuvre du procede
WO2001054907A1 (fr) 2000-01-25 2001-08-02 Koenig & Bauer Aktiengesellschaft Machine a imprimer sur feuilles dotee d'un cylindre serigraphique
DE20018616U1 (de) * 2000-10-31 2001-02-15 Rehorik, Michael, 73666 Baltmannsweiler Gebogenes Sieb für Siebdruck
DE102009017686A1 (de) * 2009-04-16 2010-10-28 Steinemann Technology Ag Siebdruckmaschine mit Greifertransport

Also Published As

Publication number Publication date
US20230001685A1 (en) 2023-01-05
JP2021066180A (ja) 2021-04-30
DE102019216458A1 (de) 2021-04-29
US20210122151A1 (en) 2021-04-29
US11712884B2 (en) 2023-08-01
CN112706506A (zh) 2021-04-27
US11559978B2 (en) 2023-01-24
CN112706506B (zh) 2023-02-14

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